Samuel a



S. A. HILL & Cx F. THUMM. DEVICE EOE GENEEATING STEAM 1N STEAM GENEEAToEs. No. 95,687.

Patented Oct'. 1 2, 1869.`

SAMUEL A. ILL'AED CHARLES E. THUMM, 0E orL curr, AssIGNoEs To THEMsELvEs AND OLIVER P. soAIEE, 0E Prfr'rsnnc, PENNSYLVANIA."

Laws Patent-N0. 95,687, ema catter 12. 1869.

M IMPROVEMENT m DEVICES FOR GENEEAZ'ING- STEAM IN' STEAM-GENERATORS.

The Module referred to in these Letters Patent and' making part of the same.

To all whom it may concern; A

Be it, known that we, SAMUELA. HILL and CHARLES F. THUMM, both of Oil City, in the county of Venango, 'and State of hennsylvania, have invented a new and useful Improvementin Apparatus for Generatin vSteam; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying ,rawings, and to the letters of reference marked thereon. v- I 'lhe nature of our invention consists in so constructing the apparatus,v hereinafter described, that heated hydrocarbon, heated air, and superheated Asteam are,

mixed and commingled together, so as to form a gaseous or vapor-ous fuel for genera'tin g steam.

To enable others skilled in the art to make and use l our invention', we will proceed to describe its construen tion and operation.

l In-the accompanying drawings, which form part of our specification- Figure l is a perspective view of our improvement in apparat-ns for vportion of the furnace-wall broken away, for the purpose of showing the arrangement of the pipe for super-` heating the steam.

Figure 2 is a longitudinal and vertical section of our improvement in apparatus for generating steam.

In the accompanying drawings C represents the masonry-Work of the furnace, which of ordinary construction.

X represents a boiler for generating steam:

In the front end ofthe boiler X is iitted a pipe or Atube, m, inside of whichis arranged a pipe, g, so that a space is left between the inside of the tube m and outside of pipe g.

To the tube m is attached a pipe, h, which is also attached to the chamber A, a part of which extends into the fire-chamber ofthe furnace of the boiler.y Y

Inside of chamber A is fitted a portion of the steam-pipef, the outlet of which projects beyond the upper side ofthe boiler X.

Io the chamber A is attached a pipe, e, which passes back along one side of the heat-chamber, and out at the back endofthe furnace.

'lhe pipes j' and g are provided with valves, as indicated at S and S.

generating steam, and represents a' `The Skaai mechanic win readily understand the construction and arrangement of the several parts of our improvement, and the relation they bear tov each other, by reference to the accompanying drawings, and

' ii'om the foregoing description; we will, therefore, proceed to describe its operation, which is as follows:

The pipe g being attached `to a reservoir containing hyc'lrocarbonpih a fire is made-in the chamberfIA of the furnace, and steam generated in the boiler X, and-when the desired pressure of steam is' obtained, the valve s in pipe (fis opened so as to allow a very small stream of thehydrocarbonlol to flow through the pipe into the tube m, which has become heated by the steam in the boiler, and the oil coming in contact with the heated surface ofthe tube 1n, will become heated, and flowing back through it to the pipe 71., ows down 'it into cham` ber A. 'i The valve S', of the steam-pipe f, is then opened, which will allow steam, which j, to pass into chamber A, and thereby cause a current of air to be drawn through pipe e into the chainbcr A.

-This current of air, which is heated in its passage through the pipe e, coming in contact with the heated oil'as it flows from pipe h, mixes with it, andthese mix-ed elements being drawnforward-by the current l steam.

Y Having thus described the nature, construction, and operation of our improvement,

that we claim as of ourl invention, isl. The construction and arrangement of the hereinbefore-described devices, for commingling in chambers A and B heated hydrocarbon, heated air, and super,- heatcd steam, so as toy form a gaseousor Avaporous admixture for burning, substantially as herein described. 2. The combination of the pipes e, f, g, and h, and chambers A and B, constructed, arra ged,`and operating substantially as -herein described.

SAMUEL A. HILL. CHAS. If. THUMM. Witnesses:

Geo. H. THOMAS, J AMES J. J onNs'roX.

is superheated in pipe' 

